Senior Network Engineer - TS/SCI w CI Poly

Modern Government Solutions; McLean (VA); On-site; USD 140,000 - 200,000; Full time

Job summary

Modern Government Solutions (MGS) is seeking a Senior Network Engineer to drive performance, stability, and scalability of next‑generation data center networks supporting AI workloads.

You will join a diverse team to design, deploy, and maintain network infrastructure, collaborating with partners to deliver high standards for building and scaling networks, with ongoing training and professional development.

Qualifications

• Must possess an active DoD TS/SCI with CI Polygraph security clearance.
• IAM Level II certification to satisfy DoD 8570 IAT requirements.
• Proven experience designing, configuring, managing, and troubleshooting complex BGP, VXLAN, and L2/L3 data center architectures and topologies.
• Experience with Spine-Leaf data center fabric architecture, design, and implementation, and redundancy protocols such as MCLAG or LACP.
• Ability to build expertise in troubleshooting RoCEv2 for ultra high-speed data transfers.
• Strong communication and collaboration skills; commitment to quality work.
• Willingness to travel up to 20% (domestic/international) for on-site work.

Responsibilities

• Design, configure, troubleshoot, and maintain complex Layer 2 and Layer 3 data center architectures using BGP, ECMP, VXLAN, MCLAG, Spine-Leaf, RoCEv2.
• Collaborate with cross-functional teams to translate business requirements into network solutions.
• Mentor and guide junior team members in their growth.
• Document network designs and configurations for knowledge sharing.

Skills

TS/SCI CI Poly

IAM II

BGP

VXLAN

Spine-Leaf

MCLAG/LACP

RoCEv2

Communication

Travel up to 20%

Tools

Linux NOS

Job description

Senior Network Engineer, AI Data Center Infrastructure

LOCATION: McLean, VA

CLEARANCE REQUIRED: Active TS/SCI with CI Polygraph

EMPLOYMENT TYPE: Full-time, Onsite

TRAVEL: Up to 20% (Domestic and International)

POSITION SUMMARY

Modern Government Solutions (MGS) is seeking a Senior Network Engineer to drive the performance, stability, and scalability of next-generation data center networks supporting Artificial Intelligence (AI) workloads. Working with enterprise-leading equipment and emerging technologies, you will play a critical role in designing and implementing robust, efficient network infrastructure.

You will join a diverse team of software and platform engineers to design, deploy, and maintain network infrastructure, collaborating with partners inside and outside the organization to deliver the highest standards for building and scaling networks, supported by ongoing training and professional development.

RESPONSIBILITIES (not limited to)

• Design, configure, troubleshoot, and maintain complex Layer 2 and Layer 3 data center architectures using Border Gateway Protocol (BGP), Equal Cost Multipath (ECMP), Virtual Extensible LAN (VXLAN), Multi-Chassis Link Aggregation Group (MCLAG), Spine-Leaf topologies, RDMA over Converged Ethernet (RoCEv2), and related technologies
• Collaborate with cross-functional teams to translate business requirements into effective network solutions
• Mentor and guide junior team members in their professional growth
• Document network infrastructure designs and configurations for knowledge sharing

REQUIRED SKILLS AND QUALIFICATIONS

• Must possess an active DoD TS/SCI with CI Polygraph security clearance.
• Current Information Assurance Management (IAM) Level II certification to satisfy DoD 8570 Information Assurance Technical (IAT) requirements
• Proven experience designing, configuring, managing, and troubleshooting complex BGP, VXLAN, and Layer 2 and Layer 3 data center architectures and topologies
• Experience with Spine-Leaf data center fabric architecture, design, and implementation, and with redundancy protocols such as MCLAG or Link Aggregation Control Protocol (LACP)
• Ability and willingness to build expertise in troubleshooting, designing, and monitoring RoCEv2 supporting ultra high-speed data transfers
• Strong communication, cross-functional collaboration, problem-solving, and attention to detail, with a commitment to quality work
• Commitment to staying current on networking trends, best practices, and technology advancements
• Ability to travel up to 20%, domestic and international, to perform on-site installations, maintenance, and troubleshooting at customer sites or data centers

PREFERRED SKILLS AND QUALIFICATIONS

• Experience with Linux-based Network Operating Systems (NOS)

*Applicants selected will be United States citizens and may be subject to a government security investigation for access to classified information.*

ABOUT US

At MGS, we believe a people-first culture corresponds to organizational success through a commitment to excellence, integrity, inclusion, and an attitude that welcomes challenges meets demands, sustains growth, and drives innovation. We provide expert mission-first technical and programmatic services and solutions for the US intelligence community, the US Department of Defense, and other governmental agencies. We create people-first organizational cultures where employees feel needed in the system, not a system that needs employees. We provide you with long‑term career opportunities centrally focused on our core value system: inclusion, integrity, and a commitment to excellence.

MGS is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status, and will not be discriminated against on the basis of disability.